Honestly the description of this place sounds like what I’ve found Sweden to be, since moving here from Palo Alto last month. I am walking distance from everything I need, I am 10 minutes from a huge park with a large body of water, I walk to work, and if I need to detach I can take a boat to a summer house that’s off the grid.
Funny enough, there is a similar city in John Brunner‘s Sheep looking up, I believe. Established in the Bay Area as a utopian place after California became a postapocalyptic nightmare following a giant earthquake.